Effect of Left Atrial Volume Reduction with Maze Operation on Sinus Conversion and Recovery of Left Atrial Transport Function

Maze 수술 후 동율동 및 좌심방 수축능 회복에 대한 좌심방 부피 감소 성형술의 영향

  • Hong Seong-Beom (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School) ;
  • Ryu Sang-Wan (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School) ;
  • Jung Eun-Kyung (Department of Preventive Medicine, Chonnam National University Medical School) ;
  • Jung In-Suk (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School) ;
  • Bum Min-Sun (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School) ;
  • Park Jung-Min (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School) ;
  • Lee Kyo-Sun (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School) ;
  • Kim Sang-Hyung (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School) ;
  • Ahn Byung-Hee (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School)
  • 홍성범 (전남대학교 의과대학 흉부외과학교실) ;
  • 류상완 (전남대학교 의과대학 흉부외과학교실) ;
  • 정은경 (전남대학교 의과대학 예방의학교실) ;
  • 정인석 (전남대학교 의과대학 흉부외과학교실) ;
  • 범민선 (전남대학교 의과대학 흉부외과학교실) ;
  • 박정민 (전남대학교 의과대학 흉부외과학교실) ;
  • 이교선 (전남대학교 의과대학 흉부외과학교실) ;
  • 김상형 (전남대학교 의과대학 흉부외과학교실) ;
  • 안병희 (전남대학교 의과대학 흉부외과학교실)
  • Published : 2005.11.01

Abstract

Background: The Maze procedure considered the most effective method of treatment for atrial fibrillation. However, the sinus conversion rates decreased due to several factors, especially enlarged left atrium. The purpose of this study was to investigate the effects of Maze procedure with aen atrial volume reduction plasty on rheumatic mitral valve disease, Material and Method: From December of 200f to July of 2004, 45 patients received mitral valve and Maze operation. The patients were placed in either group f or group 2, based on the left atrial volume reduction plasty. The presence and onset of sinus rhythm and the incidence of trans mitral A waves were monitored during the postoperative 7 days and throughout the follow up period of 3 and 6 months. Mean follow up periods were 15.8 10.1 months in group 1 and $6.1\pm2.7$ months in group 2. Result: The sinus onset were $9.88\pm12.2$ days in group 1, and $1\pm3.6$ days in group 2 (p<0.01). The sinus conversion rates in the group 1 and 2 were $65\%,\;75\%$ (p=0.07) in the postoperative 7 days, $70.5\%,\;100\%$ (p<0.01) at postoperative 3 months, and $93\%,\;100\%$ (p<0.01) at postoperative 6 months, respectively. The wave detection rates in the postoperative 7days were $31.2\%\;and\;63.6\%$, and continued to improve over time to $83.3\%\;and\;100\%$ by 6months, respectively. Conclusion: The results suggest that Maze procedure with left atrial volume reduction plasty is effective for inducing sinus rhythm and for restoring left atrial contractile function after concomitant rheumatic mitral valve surgery. However further follow up of this patients for long time is necessary.

배경: Maze술식은 심방 세동의 치료에 있어 중요한 방법으로 받아들여지고 있으나 몇 가지 요인, 특히 좌심방 크기가 클수록 전환율이 감소하는 것으로 알려져 있다. 본 연구에서는 류마티스성 승모판막 질환과 동반된 심방 세동 환자에서 좌심방 부피 감소 성형술과 함께 시행한 Maze술식의 효과에 대해 알아보고자 하였다. 대상 및 방법 : 2001년 12월부터 2004년 7월까지 류마티스성 승모판막 질환과 동반한 심방 세동에 대해 총 45명의 환자에서 수술을 시행하였다. 좌심방 부피 감소 성형술을 시행하지 않은 경우를 L군, 시행한 경우를 2군으로 구분하고, 수술 후 7일, 3개월, 그리고 6개월에 동율동 전환과 A파 발견율을 비교 분석하였다. 평균 추적 관찰 기간은 1군과 2군에서 각각 $15.8\pm10.1$개월, $6.1\pm2.7$개월이었다. 결과: 수술 후 동율동 전환기간은 1군과 2군에서 각각 $9.88\pm12.2$일, $1\pm3.6$일 (p<0.01)이었다. 동율동 전환율은 1군과 2군에서 각각 수술 후 7일에 $65\%,\;75\%$ (p=0.07), 수술 후 3개월에 $70.5\%,\;100\%$ (p<0.01),수술 후 6개월에 $93\%,\;100\%$(p<0.01)였다. A파 발견율은 1군과 2군에서 수술 후 7일에 $31.2\%,\;83.3\%$, 3개월에 $63.6\%,\;100\%$, 6개월에 $71.4\%,\;100\%$였다. 결론: 본 연구에서 류마티스성 승모판 질환에 동반된 심방 세동 환자에서 좌심방 부피 감소 성형술과 함께 시행한 Maze 술식이 수술 후 동율동 전환율이나 좌심방 수축능 회복에 좋은 결과를 보여주었다 그러나 향후 대상환자들에 대한 중장기적인 추적 관찰이 필요하리라 생각한다.

Keywords

References

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